diff options
Diffstat (limited to 'src/vnet/devices/ssvm/node.c')
| -rw-r--r-- | src/vnet/devices/ssvm/node.c | 345 |
1 files changed, 0 insertions, 345 deletions
diff --git a/src/vnet/devices/ssvm/node.c b/src/vnet/devices/ssvm/node.c deleted file mode 100644 index 344b357662c..00000000000 --- a/src/vnet/devices/ssvm/node.c +++ /dev/null @@ -1,345 +0,0 @@ -/* - * Copyright (c) 2015 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -#include "ssvm_eth.h" - -vlib_node_registration_t ssvm_eth_input_node; - -typedef struct -{ - u32 next_index; - u32 sw_if_index; -} ssvm_eth_input_trace_t; - -/* packet trace format function */ -static u8 * -format_ssvm_eth_input_trace (u8 * s, va_list * args) -{ - CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); - CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); - ssvm_eth_input_trace_t *t = va_arg (*args, ssvm_eth_input_trace_t *); - - s = format (s, "SSVM_ETH_INPUT: sw_if_index %d, next index %d", - t->sw_if_index, t->next_index); - return s; -} - -vlib_node_registration_t ssvm_eth_input_node; - -#define foreach_ssvm_eth_input_error \ -_(NO_BUFFERS, "Rx packet drops (no buffers)") - -typedef enum -{ -#define _(sym,str) SSVM_ETH_INPUT_ERROR_##sym, - foreach_ssvm_eth_input_error -#undef _ - SSVM_ETH_INPUT_N_ERROR, -} ssvm_eth_input_error_t; - -static char *ssvm_eth_input_error_strings[] = { -#define _(sym,string) string, - foreach_ssvm_eth_input_error -#undef _ -}; - -typedef enum -{ - SSVM_ETH_INPUT_NEXT_DROP, - SSVM_ETH_INPUT_NEXT_ETHERNET_INPUT, - SSVM_ETH_INPUT_NEXT_IP4_INPUT, - SSVM_ETH_INPUT_NEXT_IP6_INPUT, - SSVM_ETH_INPUT_NEXT_MPLS_INPUT, - SSVM_ETH_INPUT_N_NEXT, -} ssvm_eth_input_next_t; - -static inline uword -ssvm_eth_device_input (ssvm_eth_main_t * em, - ssvm_private_t * intfc, vlib_node_runtime_t * node) -{ - ssvm_shared_header_t *sh = intfc->sh; - vlib_main_t *vm = em->vlib_main; - svm_queue_t *q; - ssvm_eth_queue_elt_t *elt, *elts; - u32 elt_index; - u32 my_pid = intfc->my_pid; - int rx_queue_index; - u32 n_to_alloc = VLIB_FRAME_SIZE * 2; - u32 n_allocated, n_present_in_cache; - u32 next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT; - vlib_buffer_free_list_t *fl; - u32 n_left_to_next, *to_next; - u32 next0; - u32 n_buffers; - u32 n_available; - u32 bi0, saved_bi0; - vlib_buffer_t *b0, *prev; - u32 saved_cache_size = 0; - ethernet_header_t *eh0; - u16 type0; - u32 n_rx_bytes = 0, l3_offset0; - u32 thread_index = vlib_get_thread_index (); - u32 trace_cnt __attribute__ ((unused)) = vlib_get_trace_count (vm, node); - volatile u32 *lock; - u32 *elt_indices; - uword n_trace = vlib_get_trace_count (vm, node); - - /* Either side down? buh-bye... */ - if (pointer_to_uword (sh->opaque[MASTER_ADMIN_STATE_INDEX]) == 0 || - pointer_to_uword (sh->opaque[SLAVE_ADMIN_STATE_INDEX]) == 0) - return 0; - - if (intfc->i_am_master) - q = (svm_queue_t *) (sh->opaque[TO_MASTER_Q_INDEX]); - else - q = (svm_queue_t *) (sh->opaque[TO_SLAVE_Q_INDEX]); - - /* Nothing to do? */ - if (q->cursize == 0) - return 0; - - fl = vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX); - - vec_reset_length (intfc->rx_queue); - - lock = (u32 *) q; - while (__sync_lock_test_and_set (lock, 1)) - ; - while (q->cursize > 0) - { - svm_queue_sub_raw (q, (u8 *) & elt_index); - ASSERT (elt_index < 2048); - vec_add1 (intfc->rx_queue, elt_index); - } - CLIB_MEMORY_BARRIER (); - *lock = 0; - - n_present_in_cache = vec_len (em->buffer_cache); - - if (vec_len (em->buffer_cache) < vec_len (intfc->rx_queue) * 2) - { - vec_validate (em->buffer_cache, - n_to_alloc + vec_len (em->buffer_cache) - 1); - n_allocated = - vlib_buffer_alloc (vm, &em->buffer_cache[n_present_in_cache], - n_to_alloc); - - n_present_in_cache += n_allocated; - _vec_len (em->buffer_cache) = n_present_in_cache; - } - - elts = (ssvm_eth_queue_elt_t *) (sh->opaque[CHUNK_POOL_INDEX]); - - n_buffers = vec_len (intfc->rx_queue); - rx_queue_index = 0; - - while (n_buffers > 0) - { - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - while (n_buffers > 0 && n_left_to_next > 0) - { - elt = elts + intfc->rx_queue[rx_queue_index]; - - saved_cache_size = n_present_in_cache; - if (PREDICT_FALSE (saved_cache_size == 0)) - { - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - goto out; - } - saved_bi0 = bi0 = em->buffer_cache[--n_present_in_cache]; - b0 = vlib_get_buffer (vm, bi0); - prev = 0; - - while (1) - { - vlib_buffer_init_for_free_list (b0, fl); - - b0->current_data = elt->current_data_hint; - b0->current_length = elt->length_this_buffer; - b0->total_length_not_including_first_buffer = - elt->total_length_not_including_first_buffer; - - clib_memcpy (b0->data + b0->current_data, elt->data, - b0->current_length); - - if (PREDICT_FALSE (prev != 0)) - prev->next_buffer = bi0; - - if (PREDICT_FALSE (elt->flags & SSVM_BUFFER_NEXT_PRESENT)) - { - prev = b0; - if (PREDICT_FALSE (n_present_in_cache == 0)) - { - vlib_put_next_frame (vm, node, next_index, - n_left_to_next); - goto out; - } - bi0 = em->buffer_cache[--n_present_in_cache]; - b0 = vlib_get_buffer (vm, bi0); - } - else - break; - } - - saved_cache_size = n_present_in_cache; - - to_next[0] = saved_bi0; - to_next++; - n_left_to_next--; - - b0 = vlib_get_buffer (vm, saved_bi0); - eh0 = vlib_buffer_get_current (b0); - - type0 = clib_net_to_host_u16 (eh0->type); - - next0 = SSVM_ETH_INPUT_NEXT_ETHERNET_INPUT; - - if (type0 == ETHERNET_TYPE_IP4) - next0 = SSVM_ETH_INPUT_NEXT_IP4_INPUT; - else if (type0 == ETHERNET_TYPE_IP6) - next0 = SSVM_ETH_INPUT_NEXT_IP6_INPUT; - else if (type0 == ETHERNET_TYPE_MPLS) - next0 = SSVM_ETH_INPUT_NEXT_MPLS_INPUT; - - l3_offset0 = ((next0 == SSVM_ETH_INPUT_NEXT_IP4_INPUT || - next0 == SSVM_ETH_INPUT_NEXT_IP6_INPUT || - next0 == SSVM_ETH_INPUT_NEXT_MPLS_INPUT) ? - sizeof (ethernet_header_t) : 0); - - n_rx_bytes += b0->current_length - + b0->total_length_not_including_first_buffer; - - b0->current_data += l3_offset0; - b0->current_length -= l3_offset0; - b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID; - - vnet_buffer (b0)->sw_if_index[VLIB_RX] = intfc->vlib_hw_if_index; - vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; - - /* - * Turn this on if you run into - * "bad monkey" contexts, and you want to know exactly - * which nodes they've visited... See main.c... - */ - VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); - - if (PREDICT_FALSE (n_trace > 0)) - { - ssvm_eth_input_trace_t *tr; - - vlib_trace_buffer (vm, node, next0, b0, /* follow_chain */ 1); - vlib_set_trace_count (vm, node, --n_trace); - - tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); - - tr->next_index = next0; - tr->sw_if_index = intfc->vlib_hw_if_index; - } - - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - bi0, next0); - n_buffers--; - rx_queue_index++; - } - - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - -out: - if (em->buffer_cache) - _vec_len (em->buffer_cache) = saved_cache_size; - else - ASSERT (saved_cache_size == 0); - - ssvm_lock (sh, my_pid, 2); - - ASSERT (vec_len (intfc->rx_queue) > 0); - - n_available = (u32) pointer_to_uword (sh->opaque[CHUNK_POOL_NFREE]); - elt_indices = (u32 *) (sh->opaque[CHUNK_POOL_FREELIST_INDEX]); - - clib_memcpy (&elt_indices[n_available], intfc->rx_queue, - vec_len (intfc->rx_queue) * sizeof (u32)); - - n_available += vec_len (intfc->rx_queue); - sh->opaque[CHUNK_POOL_NFREE] = uword_to_pointer (n_available, void *); - - ssvm_unlock (sh); - - vlib_error_count (vm, node->node_index, SSVM_ETH_INPUT_ERROR_NO_BUFFERS, - n_buffers); - - vlib_increment_combined_counter - (vnet_get_main ()->interface_main.combined_sw_if_counters - + VNET_INTERFACE_COUNTER_RX, thread_index, - intfc->vlib_hw_if_index, rx_queue_index, n_rx_bytes); - - vnet_device_increment_rx_packets (thread_index, rx_queue_index); - - return rx_queue_index; -} - -static uword -ssvm_eth_input_node_fn (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - ssvm_eth_main_t *em = &ssvm_eth_main; - ssvm_private_t *intfc; - uword n_rx_packets = 0; - - vec_foreach (intfc, em->intfcs) - { - n_rx_packets += ssvm_eth_device_input (em, intfc, node); - } - - return n_rx_packets; -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (ssvm_eth_input_node) = { - .function = ssvm_eth_input_node_fn, - .name = "ssvm_eth_input", - .vector_size = sizeof (u32), - .format_trace = format_ssvm_eth_input_trace, - .type = VLIB_NODE_TYPE_INPUT, - .state = VLIB_NODE_STATE_DISABLED, - - .n_errors = ARRAY_LEN(ssvm_eth_input_error_strings), - .error_strings = ssvm_eth_input_error_strings, - - .n_next_nodes = SSVM_ETH_INPUT_N_NEXT, - - /* edit / add dispositions here */ - .next_nodes = { - [SSVM_ETH_INPUT_NEXT_DROP] = "error-drop", - [SSVM_ETH_INPUT_NEXT_ETHERNET_INPUT] = "ethernet-input", - [SSVM_ETH_INPUT_NEXT_IP4_INPUT] = "ip4-input", - [SSVM_ETH_INPUT_NEXT_IP6_INPUT] = "ip6-input", - [SSVM_ETH_INPUT_NEXT_MPLS_INPUT] = "mpls-input", - }, -}; - -VLIB_NODE_FUNCTION_MULTIARCH (ssvm_eth_input_node, ssvm_eth_input_node_fn) -/* *INDENT-ON* */ - - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |